CHAPTER V. ANATOMY AND PHYSIOLOGY IN THE NINETEENTH CENTURY

[1] Baron de Cuvier's Theory of the Earth. New York, 1818, p. 123.

[2] On the Organs and Mode of Fecundation of Orchidex and Asclepiadea, by Robert Brown, Esq., in Miscellaneous Botanical Works. London, 1866, Vol. I., pp. 511-514.

[3] Justin Liebig, Animal Chemistry. London, 1843, p. 17f.

CHAPTER VI. THEORIES OF ORGANIC EVOLUTION

[1] "Essay on the Metamorphoses of Plants," by Goethe, translated for the present work from Grundriss einer Geschichte der Naturwissenschaften, by Friederich Dannemann (2 vols.). Leipzig, 1896, Vol. I., p. 194.

[2] The Temple of Nature, or The Origin of Society, by Erasmus Darwin, edition published in 1807, p. 35.

[3] Baron de Cuvier, Theory of the Earth. New York, 1818, p.74. (This was the introduction to Cuvier's great work.)